Ephedrine and theophylline in asthmatic children: quantitive observations on the combination and ephedrine tachyphylaxis.
D001249:Asthma / Q000188:drug therapy*; D002648:Child; D002986:Clinical Trials as Topic; D004809:Ephedrine / Q000009:adverse effects / Q000627:therapeutic use*; D006801:Humans; D012129:Respiratory Function Tests; D013618:Tachyphylaxis; D013806:Theophylline / Q000009:adverse effects / Q000627:therapeutic use*
D013806:Theophylline; D004809:Ephedrine